Add Update Course action for adaptive courses

python/educational-core/resources/META-INF/plugin.xml

@@ -84,6 +84,8 @@
             text="Switch Task Description Panel">
     </action>
 
+    <action id="Edu.UpdateRecommendation" class="com.jetbrains.edu.learning.actions.StudyUpdateRecommendationAction"/>
+
     <!--course creator-->
     <action id="CreateLesson" class="com.jetbrains.edu.coursecreator.actions.CCCreateLesson">
       <add-to-group group-id="NewGroup" anchor="before" relative-to-action="NewFile"/>

python/educational-core/src/com/jetbrains/edu/learning/EduPluginConfigurator.java

@@ -119,7 +119,8 @@ public interface EduPluginConfigurator {
       StudyPreviousTaskAction.ACTION_ID,
       StudyNextTaskAction.ACTION_ID,
       StudyRefreshTaskFileAction.ACTION_ID,
-      StudyShowHintAction.ACTION_ID
+      StudyShowHintAction.ACTION_ID,
+      StudyUpdateRecommendationAction.ACTION_ID
     };
     ActionManager actionManager = ActionManager.getInstance();
     Arrays.stream(ids)

python/educational-core/src/com/jetbrains/edu/learning/StudyUtils.java

@@ -447,7 +447,7 @@ public class StudyUtils {
   @NotNull
   private static String getFooterWithLink(Task task) {
     return
-    "<div class=\"footer\">" + "<a href=" + EduStepikUtils.getLink(task) + ">Open on Stepik</a>"  + "</div>";
+    "<div class=\"footer\">" + "<a href=" + EduStepikUtils.getAdaptiveLink(task) + ">Open on Stepik</a>"  + "</div>";
   }
 
   @NotNull

python/educational-core/src/com/jetbrains/edu/learning/actions/StudyUpdateRecommendationAction.java

@@ -0,0 +1,77 @@
+package com.jetbrains.edu.learning.actions;
+
+import com.intellij.ide.projectView.ProjectView;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.actionSystem.Presentation;
+import com.intellij.openapi.application.ApplicationManager;
+import com.intellij.openapi.progress.ProgressManager;
+import com.intellij.openapi.project.DumbAwareAction;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.vfs.VirtualFileManager;
+import com.jetbrains.edu.learning.StudyTaskManager;
+import com.jetbrains.edu.learning.StudyUtils;
+import com.jetbrains.edu.learning.courseFormat.Course;
+import com.jetbrains.edu.learning.courseFormat.Lesson;
+import com.jetbrains.edu.learning.courseFormat.RemoteCourse;
+import com.jetbrains.edu.learning.courseFormat.tasks.Task;
+import com.jetbrains.edu.learning.navigation.StudyNavigator;
+import com.jetbrains.edu.learning.stepic.EduAdaptiveStepicConnector;
+import icons.EducationalCoreIcons;
+
+public class StudyUpdateRecommendationAction extends DumbAwareAction {
+  public static final String ACTION_ID = "Edu.UpdateRecommendation";
+
+  public StudyUpdateRecommendationAction() {
+    super("Update course", "Update course", EducationalCoreIcons.Stepik);
+  }
+
+  @Override
+  public void actionPerformed(AnActionEvent e) {
+    Project project = e.getProject();
+    assert project != null;
+
+    Course course = StudyTaskManager.getInstance(project).getCourse();
+    assert course != null;
+
+    Lesson adaptiveLesson = course.getLessons().get(0);
+    assert adaptiveLesson != null;
+
+    int taskNumber = adaptiveLesson.getTaskList().size();
+    Task lastRecommendationInCourse = adaptiveLesson.getTaskList().get(taskNumber - 1);
+    Task lastRecommendationOnStepik = ProgressManager.getInstance().runProcessWithProgressSynchronously(
+      () -> {
+        ProgressManager.getInstance().getProgressIndicator().setIndeterminate(true);
+        return StudyUtils.execCancelable(() -> EduAdaptiveStepicConnector.getNextRecommendation(project, (RemoteCourse)course));
+      },
+      "Updating Course", true, project);
+
+    if (lastRecommendationOnStepik != null && lastRecommendationOnStepik.getStepId() != lastRecommendationInCourse.getStepId()) {
+      lastRecommendationOnStepik.initTask(adaptiveLesson, false);
+      EduAdaptiveStepicConnector.replaceCurrentTask(project, lastRecommendationOnStepik, adaptiveLesson);
+      ApplicationManager.getApplication().invokeLater(() -> {
+        VirtualFileManager.getInstance().refreshWithoutFileWatcher(false);
+        ProjectView.getInstance(project).refresh();
+        StudyNavigator.navigateToTask(project, lastRecommendationOnStepik);
+      });
+    }
+  }
+
+  @Override
+  public void update(AnActionEvent e) {
+    Presentation presentation = e.getPresentation();
+
+    Project project = e.getProject();
+    if (project == null) {
+      presentation.setEnabledAndVisible(false);
+      return;
+    }
+
+    Course course = StudyTaskManager.getInstance(project).getCourse();
+    if (course == null || !course.isAdaptive()) {
+      presentation.setEnabledAndVisible(false);
+      return;
+    }
+
+    presentation.setEnabledAndVisible(true);
+  }
+}

python/educational-core/src/com/jetbrains/edu/learning/stepic/EduAdaptiveStepicConnector.java

@@ -363,7 +363,7 @@ public class EduAdaptiveStepicConnector {
     }
   }
 
-  private static void replaceCurrentTask(@NotNull Project project, @NotNull Task task, @NotNull Lesson lesson) {
+  public static void replaceCurrentTask(@NotNull Project project, @NotNull Task task, @NotNull Lesson lesson) {
     Course course = StudyTaskManager.getInstance(project).getCourse();
     assert course != null;
 

python/educational-core/src/com/jetbrains/edu/learning/stepic/EduStepikUtils.java

@@ -22,7 +22,7 @@ import org.jetbrains.annotations.Nullable;
 
 public class EduStepikUtils {
   @Nullable
-  public static String getLink(@Nullable Task task) {
+  public static String getLink(@Nullable Task task, int stepNumber) {
     if (task == null) {
       return null;
     }
@@ -31,6 +31,12 @@ public class EduStepikUtils {
       return null;
     }
 
-    return String.format("%s/lesson/%d/step/%d", EduStepicNames.STEPIC_URL, lesson.getId(), task.getPosition());
+    return String.format("%s/lesson/%d/step/%d", EduStepicNames.STEPIC_URL, lesson.getId(), stepNumber);
+  }
+
+  @Nullable
+  public static String getAdaptiveLink(@Nullable Task task) {
+    String link = getLink(task, 1);
+    return link == null ? null : link + "?adaptive=true";
   }
 }